CVE-2017-16872

Name	CVE-2017-16872
Description	An issue was discovered in Teluu pjproject (pjlib and pjlib-util) in PJSIP before 2.7.1. Parsing the numeric header fields in a SIP message (like cseq, ttl, port, etc.) all had the potential to overflow, either causing unintended values to be captured or, if the values were subsequently converted back to strings, a buffer overrun. This will lead to a potential exploit using carefully crafted invalid values.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
References	DSA-4170-1
NVD severity	high (attack range: remote)

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
pjproject (PTS)	jessie (security), jessie	2.1.0.0.ast20130823-1+deb8u1	vulnerable
	stretch	2.5.5~dfsg-6	vulnerable
	stretch (security)	2.5.5~dfsg-6+deb9u1	fixed
	buster, sid	2.7.2~dfsg-1	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
pjproject	source	(unstable)	2.7.1~dfsg-1	high
pjproject	source	stretch	2.5.5~dfsg-6+deb9u1	high	DSA-4170-1

Notes

[jessie] - pjproject <ignored> (Minor issue)
https://trac.pjsip.org/repos/ticket/2056
https://trac.pjsip.org/repos/changeset/5682
In jessie Asterisk doesn't use pjproject for SIP (only for ICE, STUN and TURN)